METRICA, l’archivio istituzionale della produzione scientifica dell’Istituto Nazionale di Ricerca Metrologica, ha lo scopo di raccogliere, documentare, conservare e pubblicare, anche ad accesso aperto, i prodotti della ricerca dell’Ente.
METRICA utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da Cineca.
EnglishWe report a high-performance pulsed coherent population trapping (CPT) Cs cell atomic clock using the implementation of a symmetric auto-balanced Ramsey (SABR) interrogation sequence. The latter method is found to reduce the light-power induced frequency shift by an order of magnitude compared to a previous experiment using a simple auto-balanced Ramsey interrogation. The contribution of this shift to the clock frequency stability is now rejected in the 1e16 range at 1e4 s averaging time. Additional tricks, including a compensation method to reduce the laser amplitude noise contribution and the generation of novel error signals for local oscillator frequency and phase correction, have been implemented using a FPGA-based digital electronics board in order to improve the clock short-term stability by a of factor 2. The Allan deviation of the SABR-CPT clock, extracted from a selected 3e4 s-long dataset, is 2e13 s/ au^(1/2) and averages down to the level of 2.5e15 at 1e4 s. These results are encouraging to stimulate the development of hot cell CPT-based clocks for industrial, scientific, and instrumentation applications.
Symmetric autobalanced Ramsey interrogation for high-performance coherent-population-trapping vapor-cell atomic clock / Abdel Hafiz, M.; Coget, G.; Petersen, M.; Calosso, C. E.; Guérandel, S.; de Clercq, E.; Boudot, R.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 112:24(2018), p. 244102.
| Titolo: | Symmetric autobalanced Ramsey interrogation for high-performance coherent-population-trapping vapor-cell atomic clock |
| Autori: | |
| Data di pubblicazione: | 2018 |
| Rivista: | |
| Citazione: | Symmetric autobalanced Ramsey interrogation for high-performance coherent-population-trapping vapor-cell atomic clock / Abdel Hafiz, M.; Coget, G.; Petersen, M.; Calosso, C. E.; Guérandel, S.; de Clercq, E.; Boudot, R.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 112:24(2018), p. 244102. |
| Abstract: | We report a high-performance pulsed coherent population trapping (CPT) Cs cell atomic clock using the implementation of a symmetric auto-balanced Ramsey (SABR) interrogation sequence. The latter method is found to reduce the light-power induced frequency shift by an order of magnitude compared to a previous experiment using a simple auto-balanced Ramsey interrogation. The contribution of this shift to the clock frequency stability is now rejected in the 1e16 range at 1e4 s averaging time. Additional tricks, including a compensation method to reduce the laser amplitude noise contribution and the generation of novel error signals for local oscillator frequency and phase correction, have been implemented using a FPGA-based digital electronics board in order to improve the clock short-term stability by a of factor 2. The Allan deviation of the SABR-CPT clock, extracted from a selected 3e4 s-long dataset, is 2e13 s/ au^(1/2) and averages down to the level of 2.5e15 at 1e4 s. These results are encouraging to stimulate the development of hot cell CPT-based clocks for industrial, scientific, and instrumentation applications. |
| Handle: | http://hdl.handle.net/11696/59843 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Hafiz-2018_SABR_APL_1.5030009.pdf | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article may be found at DOI indicated above. | Versione editoriale | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11696/59843
Copyright © 2021